Setting Barcode Properties When Using the Excel Add-In

We are using the Data Matrix Barcode Font Package. While using it in combination with a mailmerge, I cannot discover how to preset the format of the DataMatrix barcodes (such as 20 x 20).It appears that the Addin automatically determines what the size should be when the conversion is made.

I realize that if a larger size is needed, the add in will automatically increase the format to the smallest size that will fit the information being encoded, but I would like to be able to force smaller amounts of information to be encoded into a larger format, for standardization.

I cant seem to find any details on the configuration of the EncDM_ASCII() function that the add in uses, to figure out how to pass the format option to it. I tried experimenting to see if I could guess at it, but modifications end in a #VALUE error in excel.

How would I modify the below entry to indicate a 24x24 format.

=EncDM_Ascii("Testing")

The table indicates that the format number is 7, but any way I pass the additional variable to the function results in a #Value error.